I know quite a few ladies of Sigma Gamma Rho Sorority, Inc. in NY. As a matter of fact, we just did some community service together on Christmas day and one of the members present was initiated through Alpha Pi. Feel free to hit me off the list.
Greek love to the Pretty Poodles!
P.S. I am not sure where you have been looking, but the lady Sigmas roll pretty deep in NYC. One place to start your search would be:
http://www.nycbglo.com/links.htm